Came across that site a couple of years ago, wish it was around when i had a bash.
The only info i could get which seemed a highly regarded secret was a few sites back in 2002 all telling different stories. Last i did was 2005, gave up when gallons of sulhuric 19% flooded the workshop
If you know where to go you can buy the chemicals direct by the gallon, i cant give sorry. You would also be geared up for Nickel, copper plated, little extra required for gold plating, just a recirculation pump.
The analogue Maplin PSU 0-30V 10A works well i bought for backup.
Might have trouble getting the right dyes, i went through everything i could get my hands on then resorted to the pro dye from a place in Leicester. What they didn't tell was the dye needed heating to 80 degrees, 90 tops. Its for that reason he states 140 degrees and why didn't buy his 'Guide'
The few areas i had trouble with were breakdown in electrical connection even driving wedges in. Alum wire was useless lost connection in secs. Notice his TI spring clip rack!
Must have another go some time still got the small 4 gallon tank.